Carex hybrids

[Paul van Rijckevorsel]

From: "Nigel Blackstock" <Blackstock8 at AOL.COM>
> Does anybody know the correct name for a Carex flava x Carex  viridula
hybrid?  I would also like to know where and when it was first  collected.

> Secondly, there are several synonyms for C. viridula and their  hybrids
with C. flava have all been named.  Does priority go to the first  of these
hybrids described (eg C. flava x C. demissa (C. viridula ssp oedocarpa)  =
C. x alsatica described in 1890) or the hybrid for C. flava x C.  viridula?

***
Afraid I don't know anything about Carex nomenclature.

As to priority I may direct your attention to Art H.4 of the ICBN.
Nomenclatural status depends on the parent taxa: i.e. everything derived
from a particular parentage gets the same name (the earliest legitimate
name).

As this rule is phrased in the widest possible terms, it does appear that if
one of the parent taxa gets a wider circumscription then all the existing
hybrid names (in that rank) for the parentage in the new circumscription
should be considered, when deciding on priority. So, if C.alsatica is the
first name published, yes it should be adopted.

Hope this helps,
Best, Paul